#include <iostream>

class Task
{
public:
    Task(int a=1, int b=2) : _a(a), _b(b), _result(0)
    {}
    void Excute()
    {
        _result = _a + _b;
        std::cout<<_result<<std::endl;
    }
    std::string ResultToString()
    {
        return std::to_string(_a) + "+" + std::to_string(_b) + "=" + std::to_string(_result);
    }
    std::string DebugToString()
    {
        return std::to_string(_a) + "+" + std::to_string(_b) + "=?";
    }

private:
    int _a;
    int _b;
    int _result;
};